I haven't tried those speakers, Scott. To be truthful, I wanted to keep it under 30lbs. The FBTs weigh 28lbs. Jumping up to 35lbs would be too much for me with all of the small gigs I do.
The comparison is kind of apples to oranges, because the speakers you mentioned are 12" speakers. A more apt comparison would be with the FBT Maxx 4A which is also 12" and weighs about the same.
Any speakers bigger than what I am using would not fit in my trunk. My whole setup fits in the trunk of my midsized sedan. Why use any tool bigger than the one I need?
The frequency response on the FBT Maxx 2A goes a little deeper than the Behringer. There are no specs on the Peavey. I am noticing and enjoying the deep, but not overpowering bass and overall clear sound that I am hearing from the FBTs.
I would be surprised if these budget speakers sounded as good as the FBTs. At
http://www.tagnz.co.nz/Test%20Report%2010inch%20%20Pow.%20Speakers%20Tools%20engl1.pdf you can read that 11 out of 12 listeners (all musicians) thought the FBT was the best sounding speaker out of the seven tested. It rated highest even in a test where the listeners couldn't see what brand they were listening to. The Peaveys and Behringer look like a great buy for someone on a budget, but I would imagine that if you splurge, you will get a better product.
Beakybird